Against the backdrop of the deepening of the steel industry’s “dual carbon” goals and ultra-low emission transformation in 2026, Calcium Cored Wire, as a core auxiliary material in the steelmaking refining process, has further upgraded its application scenarios and process effects. In traditional steelmaking processes, calcium treatment mostly relies on calcium silicon cored wire, but it has problems such as low calcium recovery rate and high impurity content. High-quality Calcium Cored Wire, with the advantages of high purity and precise feeding, has gradually become a standard material for high-quality special steel production. According to the latest industry data, after domestic key steel mills adopted Calcium Cored Wire to replace traditional materials in early 2026, the average energy consumption per ton of steel decreased by 5-8 kg of standard coal, and the calcium recovery rate increased to more than 16%, which is significantly better than traditional processes.
Core Functions and Process Compatibility of Calcium Cored Wire
The core function of Calcium Cored Wire is to realize deoxidation, desulfurization and inclusion denaturation of molten steel through precise feeding. Its working principle is to feed the high-purity calcium core (calcium content ≥97%) wrapped by the outer steel strip into the deep part of the molten steel through a wire feeder. Calcium reacts quickly with impurities such as oxygen and sulfur in the molten steel to form compounds that are easy to float up, thereby improving the cleanliness of the molten steel. In 2026, the feeding speed of mainstreamCalcium Cored Wire in the industry is controlled at 60-120m/min, and the feeding amount per ton of steel is adjusted to 0.8-1.6m/t according to the steel grade requirements, which is 15% higher than the feeding accuracy in 2025.
Technical Parameters of Mainstream Calcium Cored Wire Products (2026 Updated Version)
| Product Type | Calcium Content (%) | Calcium Core Weight (g/m) | Steel Strip Thickness (mm) | Wire Diameter (mm) | Applicable Process |
| Seamless Solid Calcium Cored Wire | 97±1 | 52-58 | 1.0±0.2 | 9-9.5 | LF Refining Furnace Deoxidation |
| Double-layer Solid Calcium Cored Wire | 97±1 | ≥50 | Inner 0.6-0.8/Outer 0.4-0.6 | 10-10.5 | Calcium Treatment of Aluminum Killed Steel |
| Customized Calcium Cored Wire | 98±1 | 60-70 | 1.2±0.2 | 11-12 | High-end Special Steel Refining |
2026 Calcium Cored Wire Application Upgrade Case Effects
In the production of gear steel and construction machinery steel in 50tLF refining furnaces, after calcium treatment with seamless solid Calcium Cored Wire, the oxygen content in molten steel is controlled below 15×10⁻⁶, which is 25% better than the treatment effect of traditional calcium silicon wire; the service life of continuous casting submerged nozzles is extended by 30%, the amount of abnormal billet cutting is reduced by 40%, and the cost per ton of steel is directly reduced by more than 3.5 yuan. In addition, in response to the increasing trend of electric furnace short-process steelmaking (expected to exceed 15% in 2026), the application demand of Calcium Cored Wire in making up for the high nitrogen content defect of electric furnace steel and improving molten steel fluidity continues to grow.
Precautions for Using Calcium Cored Wire
Adjust the wire feeding speed according to the molten steel temperature during feeding to avoid excessive oxidation of the calcium core affecting the recovery rate;
Store in a dry and ventilated place to prevent the steel strip from getting damp and rusting, which will affect the feeding stability;
Matching with an automatic wire feeding system can improve feeding accuracy and further optimize the calcium treatment effect.
For relevant industry standards, refer to the “2026 Alloy Cored Wire Application Technical Specification” issued by World Steel Association. For more details on the application of Calcium Cored Wire, you can consult a professional technical team.